This is a function of the better environmental controls capable on a large stack, vs. a small tailpipe. Pure ammonia fed SCR's can knock NOx down to near zero at a natural gas power plant, while a CNG ICE vehicle's dry CAT can only do so much.
You have to realize, however, that 'US Mix' is the mix today. Just looking at how different California is from the US Mix, you can see how much that mix can change over time (20 years ago, California looked just like the US Mix). It is very reasonable to expect that the contribution that...
I also like to point out that environmental impacts of vehicle use are not JUST GHG emissions. I live in a valley that is crossed by nearly 75% of all products coming into the US from China, all by diesel burning truck or train. It's one of the worst areas for fine particulate pollution...
There is something to be said about the electric drivetrain being the simplest, and most versatile and mechanically efficient option, regardless of the energy source - and improvements in that drivetrain's operation will impact the viability of not just BEV's, but series Hybrids, as well as...
I do think the pacifica hybrid has like a 30+ miles electric range, and pretty aggressive hybrid after that. MSRP around $40k (same as a new BMW 118d).
Going with the assumption that most drivers can be mostly served with a 40 mile daily range, but have the occasional trip over that, then you end up with a few scenarios. In a single car family, or solo driver, the 40-mile plug-in can do the job on it's own. In a multi-car family, an 80-mile...
Finally got around to listing these (Apparently, I'm not very proactive in these things). Rails are up on eBay...
Custom Yakima Crossbars for VW Jetta Sportwagen
The mix of diesel to gasoline from crude varies by the quality/style of the crude. Whenever the demand mix doesn't meet the mix in the crude, they use more expensive methods to shift production away from the 'natural' mix in the crude. This ends up driving up the price of diesel and gasoline...
Carbon fixation is not just the storage of carbon in soil, it's the storage of it in any non-CO2 form. Even as much as using the non-digested solids as physical fillers represents a form of carbon fixation.
I believe GREET considers the Carbon fixation of the ethanol crops in it's net CO2 feedstock numbers. So that 10% has a lot more than a 10% net effect.
It's not something that can't be mitigated, they way I'm understanding it, the methane leakage is at the well site, which is capturable - nothing is going to be as clean as the nuke plants we are letting shut down though.
I was not comparing it to the grid mix, I was comparing it to a modern natural gas plant (where most the growth in grid capacity has been over the last 20 years). That more accurately reflects the incremental impact of an EV sold today. Modern combined cycle natural gas power plants have NOx...
And that is based on a engine designed to high portability and reliability in that genset, NOT emissions or efficiency. Compare that power generation to a modern natural gas power plant, even with grid losses, and the EV gets a LOT cleaner.
You have to keep things in perspective about this though. Sure, an EV gets less efficiency at higher speeds. A TDI may get higher efficiency at higher speeds (to a point, of course), but this is not because the TDI is working better at those speeds - the ICE has a lot of fixed losses in it...
I need to go down and sit in an Ioniq in the next year or so before my fiat lease is up. On paper, it does everything I need. My only initial concern is it seems far to 'gadgetty' compared to the simplicity of the fiat, but the fiat simply won't fit my girls much longer.
Varies from vehicle design to design. The 12V on the fiat is the same size as the ICE version (likely why it can last a couple weeks), and many EV's WILL tap into the traction battery to top off the 12V.
Side note: The Fisker Karma had solar panels on the roof that charged the 12V battery.
Of course, I own enough cars that all my vehicles end up sitting for long periods of time, and I can tell you that at least half of my ICE vehicles have ended up with dead batteries and unable to start after a few weeks of sitting as well. This isn't so much a problem strictly tied to EV's -...
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